CA1141938A - Device for spraying a coolant onto steel ingots during continuous-casting - Google Patents
Device for spraying a coolant onto steel ingots during continuous-castingInfo
- Publication number
- CA1141938A CA1141938A CA000323639A CA323639A CA1141938A CA 1141938 A CA1141938 A CA 1141938A CA 000323639 A CA000323639 A CA 000323639A CA 323639 A CA323639 A CA 323639A CA 1141938 A CA1141938 A CA 1141938A
- Authority
- CA
- Canada
- Prior art keywords
- jet
- mixing chamber
- coolant
- propellant
- insert
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
- B22D11/1246—Nozzles; Spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Nozzles (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
A device for spraying a coolant onto steel ingots during a continuous-casting operation performed in a mould, which comprises: a jet housing located between two adjacent guide rolls of the mould immediately above the surface of the ingots, two jet outlets in the jet housing, staggered laterally in relation to each other and in opposite directions, a mixing chamber opening into the jet housing, coolant means in the form of a replaceable insert-pipe projecting into the mixing chamber, and propellant means opening into the mixing chamber.
The jet outlets impinge a mixture of propellant and coolant upon the surface of the ingots in a fan-shaped form and at an acute angle.
A device for spraying a coolant onto steel ingots during a continuous-casting operation performed in a mould, which comprises: a jet housing located between two adjacent guide rolls of the mould immediately above the surface of the ingots, two jet outlets in the jet housing, staggered laterally in relation to each other and in opposite directions, a mixing chamber opening into the jet housing, coolant means in the form of a replaceable insert-pipe projecting into the mixing chamber, and propellant means opening into the mixing chamber.
The jet outlets impinge a mixture of propellant and coolant upon the surface of the ingots in a fan-shaped form and at an acute angle.
Description
3~3 The invention relates to a device for spraying a coolant onto steel ingots during a continuous-casting opera-tion performed in a mould.
A device of the type mentioned above is disclosed, for exampler in German AS 24 44 613. Devices of this kind are intended to ensure that the coolant is distributed uniformly to the continuous-cast ingot, in an accurately determinable manner, largely excluding the Leidenfrost phenomenon and avoiding both a build-up of water between the roll and the surface of the ingot, and stray water, all of this being accomplished with no additional means.
As compared with the known design according to German AS 24 44 613, the purpose of the present invention is substantially as follows:
1. it is to achieve uniform dis-tribution of the mixture of water and air, steam or gas over the ingot, with uniform acceleration of the mixture, during spraying, over the width of the ingot;
A device of the type mentioned above is disclosed, for exampler in German AS 24 44 613. Devices of this kind are intended to ensure that the coolant is distributed uniformly to the continuous-cast ingot, in an accurately determinable manner, largely excluding the Leidenfrost phenomenon and avoiding both a build-up of water between the roll and the surface of the ingot, and stray water, all of this being accomplished with no additional means.
As compared with the known design according to German AS 24 44 613, the purpose of the present invention is substantially as follows:
1. it is to achieve uniform dis-tribution of the mixture of water and air, steam or gas over the ingot, with uniform acceleration of the mixture, during spraying, over the width of the ingot;
2. it is to be possible to spray into the roll-shadow (the triangular area between the surface of the ingotand the roll~; at the same time, the blast effect of the jet of coolant mixture is intended to blow any standing water and particles of scale out of the area between the rolls;
3. the throughput of water is to be adjustable, using the same jet and without impairing the spray pattern.
According to the present invention there is provided a device for spraying a coolant onto steel ingots during a continuous-casting operatlon perormed ln a Inould, sald devlce comprlslng: a jet housing located between two adjacent gulde rolls of the mould immediately above the surface of said ingots, two jet outlets in said jet housing, staggered later-ally in relation to each o-ther and in opposite directions, a ~ . -- 1 --~ _ _ _ _ ~ .. _ . . . . . .
mixing chamber opening into the jet housing, coolant means in the form of a replaceable insert-pipe projecting into the mixing chamber, and propellant means opening into the mixing chamber, said jet outlets impringing a mixture of prope]lant and coolant upon said surface of said ingots in a fan-shaped form and at an acute angle.
The insert-pipe according to the invention makes it possible to select any desired coolanto propellant volume ratio, with the same jet housing and the same jet outlets, and without any need to alter the jets themselves. It is also possible to provide the said insert-pipe with a device for regulating the propellant and coolant, in order that the cool-ant: propellant ratio may be varied during spraying, with no need to alter the pressure of either the coolant or the propellant.
Another substantial advantage of the inven-tion is to be perceived in the common housing for the jet outlets. This makes it possible to shorten considerably the path between the division of the mixture of coolant and propellant into two flows and the jet outlets. Furthermore, the said common jet housing allows large supply cross sections, thus reducing flow-resistance losses and increasing correspondingly the force o~ the spray issuing from the jet outlets.
Furthermore, incorporating the jet outlets into the jet housing according to the invention permits almost any desired configuration of jet-outlet geometry. According to the invention, a square, rectangular, elliptical or triangular outlet ls preferred, achieved by the cross-sectional shape of the ducts. This makes it possible to obtain a great spray-depth, a predetermined, e.g. uniform volume of mixture fromeach aperture, and a predetermined, e.g. unifrom distribution of the coolan~/propellant mixture over the metal to be cooled.
- 2 ~
.
93~3 The cross-section of a duct and the cross-section of a jet outlet may be in the ratio 3:1 to 1,5:1, preferably 2:1.
To summarize, it ma~ be stated that the cooling device according to the invention ensures accurately defined flow volumes, and permits the use o~ a wide range of liquid and gas pressures, for instances between 1 and 10 bars for gas, air and water. The cooling device according to the in-vention is also noted for reliable operation and great accuracy in required, e.g. symmetrical, distribution of liquid. Since the insert-pipe constituting the coolant connection to the mixing chamber is interchangeable, the jets may be varied over a wide range, and the ability to adapt the volumes of gas and liquid to the metal to be cooled is considerably improved.
Thus, as compared with known designs, the cooling device according to the inven`tion has a wider range of application and can achieve predetermined ingot cooling.
According to another advantageous configuration of the inventionr the jet housing is to be connected detachabl~
to the mixing chamber. This is a particularly satisfactory arrangement in that the jets themselves are subjected to con-siderably more wear that the mlxing chamber which is more remote from the hot casting. Thus, when the jet~ become worn, it is simpler to replace the entire jet housing, and to retain the mixing chamber for further use.
Further details and advantages o~ the invention may be gathered from the following description of an embodiment given as example only and illustrated in the drawing attached hereto, wherein:
Fig. 1 is an overall view of a cooling devide ac-cording to the invention, as seen in the direction of casting;
Fig. 2 shows the cooling device according to Fig. 1, , .. _ _ . . _ . . . . .. _ .
3~
as seen in the direction of arrow A, spray directions 29, 30 running parallel with the direction of the roll (9 in Fig. 1), Fig. 3 is a section along the line III-III in Fig. 1 (with the guide roll and ingot omitted), Fig. 4 is a separate view of the coolant connection in the form of an insert-pipe;
Fig. 5 is a design of cooling device according to the invention, as shown in Fig.l, including an assembly design, Fig. 6 shows the object in Fig. 5, as seem in the direc-tion of arrow B, Fig. 7 is the actual site of incorporation in thecorrect proportion corresponding to the illustration in Fig. 1, Fig. 8 is a view of Fig. 7 in the dire~tion of arrow C.
In Fig. 1, two guide rolls of a unit for the continuous casting of steel ingots are marked 10, 11, the ingot between the said rolls being marked 12.
Located between the two guicle rolls, on one side of ingot 12, is a cooling device markecl 14 as a whole~ The said cooling device consists essentially of two complexes, one a jet housing 15 and the other a mixing chamber 16. A connection 17 forthe propellant, e.g. air, opens laterally into the said mixin~ chamber, while water is fed thereto through connection 18.
As shown in Fig. 4, coolant connection 18 i9 substan-tially in the form of an insert-pipe 19 which projects coaxial~
ly into the also tubular mixing chamber 16. Welded at 20 to the upper end of insert-pipe l9 is an attachment nut 21 having an internal thread 22. Nut 21 and thread 22 are used to secure insert-pipe 19 to a corresponding-thread on the mixing chamber.
q~e upper end of nut 21 has an external thread 23 for the attachment of a coolant line by means of a cap-nut.
The coolant,e.g~wateris introducedat23intoinsert-pipe 19 whence it passes to mixing chamber 16, the flow of coolant being accurately determined by the inside diameter of the insert-pipe used. It is thus a simple matter to alter the volume oE coolant by replacing the insert-pipe with a pipe of larger or smaller diameter, independently of the flow of alr entering the mixing chamber at 17, and independently of the geometry of jet housing 150 Since the said insert-pipe is easily interchangeable, it is possible to select a variety of coolant-propellant volume ratios, with no need to change jet housing 15 itself. Nor is there any need to change the pres~ ~-sure of the coolant or propellant supply.
As seen in the direction of flow, it is desirable for insert-pipe 19 to have a minimal length of 48 mm, as measured from centreline 24 of propellant feed 17. This length is required in order to be able to vary the coolant and propellant pressures, thus providing an additional control of the propel~
lant/coolant mixture. Because of the relatively large diameter of mi~ing chamber 16, friction losses in the mixture, on the way to the jet outlets, are kept low, resulting in an increase in the force of the spray emerging from the jet outlets.
It is also advantage, in this connection, for the flow of liquid-coolant mixture to be divided into at least two part-flows within jet housing 15. This is shown in Fig. 1 in the form of two dotted ducts 25, 26.
The arrangement and design of jet outlets 27, 28 in housing 15 is shown particularly well in Fig. 2, the spray direction being indicated by arrows 29, 30. Rotating these spray directions by about 15, for example, in relation to longitudinal axis 31 of jet housing 15, ensures that the sprays emerging from jet outlets 28, 27 do not interfere with each other.
The spray pattern thus produced is shown in the plan 3~3 view of the jet housing shown in Fig. 3. In this case, spray pattern 32 corresponds to a vertical projection of the spray emerging from jet 27, while pattern 33 is a vertical projection of the spray emerging from jet 28. Thus patterns 32, 33 also indicate the area of ingot 12 covered by the sprays.
Figs. 3 and 1 show clearly that spray patterns 32, 33 cover the whole width of ingot 12. Fig. 8 shows that the in-got is also sprayed and cooled in the roll-shadow area, i.e.
in the vic~nity of the contact surfaces between the roll and the ingot.-It may furthermore gathered from Fig. 1, which shows spray patterns 32, 33 rotated through 90 in relation to Fig.
3, that the propellant coolant mixture impinges upon the sur-face of the ingot at a relatively small angle ~, this angle being between 2 and 10, preferably 5.
The connection between jet housing 15 and mixing cham-ber 16 at 3~ is preferably a threaded connection, in order to facilitate the replacement of the said housing (e.g. in the event of wear). As shown in Fig. 2, housing 15 is located in such a manner in relation to propellant feed 17 that spray directions 29, 30 are exactly parallel therewith. Jet housing 15 is secured in this position, in relation to mixing chamber 16, by means of welded ribs 35, 36. Since, in practice, jet housing 15 projects far into the relatively narrow space between adjacent rolls in the continuous-casting unit, and cannot be inspected from the outside, it is possible, from the direction of the propellant feed 17, to determine accurately, from the outside, the direction of nozzle outlets 27, 28.
In order to secure and~locate still better the setting of the jet housing, and in order also to facilitate assembly, pxovision is made, according to the invention, to connect -the device securely to an assembly plate 37. This plate, being 33~3 secured to a pick-up on the unit, automatically locates the jet housing and thus the spray direction.
In connection with Fig. 1, it should also be pointed out that cooling deYice 15, 16 is greatly enlarged in relation to guide rolls 10, 11 and ingot 12, in order to show the details of the device more clearlyO Actually, the said device is substantially smaller in relation to the other parts of 'the continuous-casting unit shown, the true proportions being in-dicated approximately in Figs. 7 and 8.
The device according to the invention is not restric-ted to the design according to Figs. 1 and 5 - 8, where the propellant and coolant lines, ,and the mixing chamber, run at right angles to the a~es of the roLls.
Other designs may be such,that these lines are brought in laterally and are arranged paral:Lel with a~es 9 of the guide rolls, in the area between the said axes and the surface of ingot 12.
~ . .
According to the present invention there is provided a device for spraying a coolant onto steel ingots during a continuous-casting operatlon perormed ln a Inould, sald devlce comprlslng: a jet housing located between two adjacent gulde rolls of the mould immediately above the surface of said ingots, two jet outlets in said jet housing, staggered later-ally in relation to each o-ther and in opposite directions, a ~ . -- 1 --~ _ _ _ _ ~ .. _ . . . . . .
mixing chamber opening into the jet housing, coolant means in the form of a replaceable insert-pipe projecting into the mixing chamber, and propellant means opening into the mixing chamber, said jet outlets impringing a mixture of prope]lant and coolant upon said surface of said ingots in a fan-shaped form and at an acute angle.
The insert-pipe according to the invention makes it possible to select any desired coolanto propellant volume ratio, with the same jet housing and the same jet outlets, and without any need to alter the jets themselves. It is also possible to provide the said insert-pipe with a device for regulating the propellant and coolant, in order that the cool-ant: propellant ratio may be varied during spraying, with no need to alter the pressure of either the coolant or the propellant.
Another substantial advantage of the inven-tion is to be perceived in the common housing for the jet outlets. This makes it possible to shorten considerably the path between the division of the mixture of coolant and propellant into two flows and the jet outlets. Furthermore, the said common jet housing allows large supply cross sections, thus reducing flow-resistance losses and increasing correspondingly the force o~ the spray issuing from the jet outlets.
Furthermore, incorporating the jet outlets into the jet housing according to the invention permits almost any desired configuration of jet-outlet geometry. According to the invention, a square, rectangular, elliptical or triangular outlet ls preferred, achieved by the cross-sectional shape of the ducts. This makes it possible to obtain a great spray-depth, a predetermined, e.g. uniform volume of mixture fromeach aperture, and a predetermined, e.g. unifrom distribution of the coolan~/propellant mixture over the metal to be cooled.
- 2 ~
.
93~3 The cross-section of a duct and the cross-section of a jet outlet may be in the ratio 3:1 to 1,5:1, preferably 2:1.
To summarize, it ma~ be stated that the cooling device according to the invention ensures accurately defined flow volumes, and permits the use o~ a wide range of liquid and gas pressures, for instances between 1 and 10 bars for gas, air and water. The cooling device according to the in-vention is also noted for reliable operation and great accuracy in required, e.g. symmetrical, distribution of liquid. Since the insert-pipe constituting the coolant connection to the mixing chamber is interchangeable, the jets may be varied over a wide range, and the ability to adapt the volumes of gas and liquid to the metal to be cooled is considerably improved.
Thus, as compared with known designs, the cooling device according to the inven`tion has a wider range of application and can achieve predetermined ingot cooling.
According to another advantageous configuration of the inventionr the jet housing is to be connected detachabl~
to the mixing chamber. This is a particularly satisfactory arrangement in that the jets themselves are subjected to con-siderably more wear that the mlxing chamber which is more remote from the hot casting. Thus, when the jet~ become worn, it is simpler to replace the entire jet housing, and to retain the mixing chamber for further use.
Further details and advantages o~ the invention may be gathered from the following description of an embodiment given as example only and illustrated in the drawing attached hereto, wherein:
Fig. 1 is an overall view of a cooling devide ac-cording to the invention, as seen in the direction of casting;
Fig. 2 shows the cooling device according to Fig. 1, , .. _ _ . . _ . . . . .. _ .
3~
as seen in the direction of arrow A, spray directions 29, 30 running parallel with the direction of the roll (9 in Fig. 1), Fig. 3 is a section along the line III-III in Fig. 1 (with the guide roll and ingot omitted), Fig. 4 is a separate view of the coolant connection in the form of an insert-pipe;
Fig. 5 is a design of cooling device according to the invention, as shown in Fig.l, including an assembly design, Fig. 6 shows the object in Fig. 5, as seem in the direc-tion of arrow B, Fig. 7 is the actual site of incorporation in thecorrect proportion corresponding to the illustration in Fig. 1, Fig. 8 is a view of Fig. 7 in the dire~tion of arrow C.
In Fig. 1, two guide rolls of a unit for the continuous casting of steel ingots are marked 10, 11, the ingot between the said rolls being marked 12.
Located between the two guicle rolls, on one side of ingot 12, is a cooling device markecl 14 as a whole~ The said cooling device consists essentially of two complexes, one a jet housing 15 and the other a mixing chamber 16. A connection 17 forthe propellant, e.g. air, opens laterally into the said mixin~ chamber, while water is fed thereto through connection 18.
As shown in Fig. 4, coolant connection 18 i9 substan-tially in the form of an insert-pipe 19 which projects coaxial~
ly into the also tubular mixing chamber 16. Welded at 20 to the upper end of insert-pipe l9 is an attachment nut 21 having an internal thread 22. Nut 21 and thread 22 are used to secure insert-pipe 19 to a corresponding-thread on the mixing chamber.
q~e upper end of nut 21 has an external thread 23 for the attachment of a coolant line by means of a cap-nut.
The coolant,e.g~wateris introducedat23intoinsert-pipe 19 whence it passes to mixing chamber 16, the flow of coolant being accurately determined by the inside diameter of the insert-pipe used. It is thus a simple matter to alter the volume oE coolant by replacing the insert-pipe with a pipe of larger or smaller diameter, independently of the flow of alr entering the mixing chamber at 17, and independently of the geometry of jet housing 150 Since the said insert-pipe is easily interchangeable, it is possible to select a variety of coolant-propellant volume ratios, with no need to change jet housing 15 itself. Nor is there any need to change the pres~ ~-sure of the coolant or propellant supply.
As seen in the direction of flow, it is desirable for insert-pipe 19 to have a minimal length of 48 mm, as measured from centreline 24 of propellant feed 17. This length is required in order to be able to vary the coolant and propellant pressures, thus providing an additional control of the propel~
lant/coolant mixture. Because of the relatively large diameter of mi~ing chamber 16, friction losses in the mixture, on the way to the jet outlets, are kept low, resulting in an increase in the force of the spray emerging from the jet outlets.
It is also advantage, in this connection, for the flow of liquid-coolant mixture to be divided into at least two part-flows within jet housing 15. This is shown in Fig. 1 in the form of two dotted ducts 25, 26.
The arrangement and design of jet outlets 27, 28 in housing 15 is shown particularly well in Fig. 2, the spray direction being indicated by arrows 29, 30. Rotating these spray directions by about 15, for example, in relation to longitudinal axis 31 of jet housing 15, ensures that the sprays emerging from jet outlets 28, 27 do not interfere with each other.
The spray pattern thus produced is shown in the plan 3~3 view of the jet housing shown in Fig. 3. In this case, spray pattern 32 corresponds to a vertical projection of the spray emerging from jet 27, while pattern 33 is a vertical projection of the spray emerging from jet 28. Thus patterns 32, 33 also indicate the area of ingot 12 covered by the sprays.
Figs. 3 and 1 show clearly that spray patterns 32, 33 cover the whole width of ingot 12. Fig. 8 shows that the in-got is also sprayed and cooled in the roll-shadow area, i.e.
in the vic~nity of the contact surfaces between the roll and the ingot.-It may furthermore gathered from Fig. 1, which shows spray patterns 32, 33 rotated through 90 in relation to Fig.
3, that the propellant coolant mixture impinges upon the sur-face of the ingot at a relatively small angle ~, this angle being between 2 and 10, preferably 5.
The connection between jet housing 15 and mixing cham-ber 16 at 3~ is preferably a threaded connection, in order to facilitate the replacement of the said housing (e.g. in the event of wear). As shown in Fig. 2, housing 15 is located in such a manner in relation to propellant feed 17 that spray directions 29, 30 are exactly parallel therewith. Jet housing 15 is secured in this position, in relation to mixing chamber 16, by means of welded ribs 35, 36. Since, in practice, jet housing 15 projects far into the relatively narrow space between adjacent rolls in the continuous-casting unit, and cannot be inspected from the outside, it is possible, from the direction of the propellant feed 17, to determine accurately, from the outside, the direction of nozzle outlets 27, 28.
In order to secure and~locate still better the setting of the jet housing, and in order also to facilitate assembly, pxovision is made, according to the invention, to connect -the device securely to an assembly plate 37. This plate, being 33~3 secured to a pick-up on the unit, automatically locates the jet housing and thus the spray direction.
In connection with Fig. 1, it should also be pointed out that cooling deYice 15, 16 is greatly enlarged in relation to guide rolls 10, 11 and ingot 12, in order to show the details of the device more clearlyO Actually, the said device is substantially smaller in relation to the other parts of 'the continuous-casting unit shown, the true proportions being in-dicated approximately in Figs. 7 and 8.
The device according to the invention is not restric-ted to the design according to Figs. 1 and 5 - 8, where the propellant and coolant lines, ,and the mixing chamber, run at right angles to the a~es of the roLls.
Other designs may be such,that these lines are brought in laterally and are arranged paral:Lel with a~es 9 of the guide rolls, in the area between the said axes and the surface of ingot 12.
~ . .
Claims (17)
1. A device for spraying a coolant onto steel ingots during a continuous-casting operation performed in a mould, said device comprising:
- a jet housing located between two adjacent guide rolls of said mould immediately above the surface of said ingots, - two jet outlets in said jet housing, staggered laterally in relation to each other and in opposite directions, - a mixing chamber opening into said jet housing, - coolant means in the form of a replaceable insert-pipe projecting into said mixing chamber, and - propellant means opening into said mixing chamber, --said jet outlets impinging a mixture of propellant and coolant upon said surface of said ingots in a fan-shaped form and at an acute angle.
- a jet housing located between two adjacent guide rolls of said mould immediately above the surface of said ingots, - two jet outlets in said jet housing, staggered laterally in relation to each other and in opposite directions, - a mixing chamber opening into said jet housing, - coolant means in the form of a replaceable insert-pipe projecting into said mixing chamber, and - propellant means opening into said mixing chamber, --said jet outlets impinging a mixture of propellant and coolant upon said surface of said ingots in a fan-shaped form and at an acute angle.
2. Device according to claim 1, wherein said pro-pellant means is in the form of a connection opening laterally into said mixing chamber and introducing air therein.
3. Device according to claim 2, wherein said mixing chamber is tubular and wherein said insert-pipe pro-jects coaxially into said mixing chamber for introducing water therein.
4. Device according to claim 3, wherein said insert-pipe has an upper end welded to an attachment nut having an internal thread, said nut and thread being adapted to secure said insert-pipe to a corresponding thread of said mixing chamber.
5. Device according to claim 3, wherein said insert pipe has a length of 48 mm as measured from the center-line of said air propellant connection.
6. Device according to claim 1, 2 or 5, wherein the jet housing is detachably connected to said mixing chamber.
7. Device according to claim 1, wherein said mixture of propellant and coolant is divided in said jet housing into at least two flows by means of ducts opening respectively into said jet outlets.
8. Device according to claim 1, 2 or 5, wherein said jet outlets are in one of the following forms: square, rectangular, elliptical, triangular.
9. Device according to claim 5, wherein said jet outlets are located along directions making about 15° in relation to the centerline of the jet housing.
10. Device according to claim 9, wherein said air propellant connection has an axis which is parallel to said directions of said jet outlets.
11. Device according to claim 1, 3 or 5, wherein said device is connected to an assembly plate secured to said mould.
12. Device according to claim 1, wherein said jet outlets are so located that said mixture of propellant and coolant impinges upon said surface of said ingot at an angle between 2 and 10°.
13. Device according to claim 12, wherein said angle is 5°.
14. Device according to claim 7, wherein the ratio between the cross-section of a duct and the cross-section of a jet outlet is 3:1 to 1,5:1.
15. Device according to claim 14, wherein said ratio is 2:1.
16. Device according to claim 1, wherein the jet housing is detachably connected to said mixing chamber.
17. Device according to claim 1, wherein said insert-pipe is provided with means for regulating the ratio of coolant : propellant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2816441.2.24 | 1978-04-15 | ||
| DE2816441A DE2816441C2 (en) | 1978-04-15 | 1978-04-15 | Device for spraying a propellant and coolant onto a continuously cast steel slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1141938A true CA1141938A (en) | 1983-03-01 |
Family
ID=6037081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000323639A Expired CA1141938A (en) | 1978-04-15 | 1979-03-15 | Device for spraying a coolant onto steel ingots during continuous-casting |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4250951A (en) |
| JP (1) | JPS54138824A (en) |
| AT (1) | AT376593B (en) |
| BE (1) | BE873830A (en) |
| CA (1) | CA1141938A (en) |
| CH (1) | CH637045A5 (en) |
| DE (1) | DE2816441C2 (en) |
| FR (1) | FR2432356A1 (en) |
| GB (1) | GB2018608B (en) |
| IT (1) | IT1112378B (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3004864C2 (en) * | 1980-02-09 | 1983-12-29 | Lechler Gmbh & Co Kg, 7012 Fellbach | Device for spraying a propellant and cooling agent mixture onto cast strands |
| US4565353A (en) * | 1981-07-23 | 1986-01-21 | United States Steel Corporation | Apparatus for suppressing fume from a metal pouring operation |
| DE3239042A1 (en) * | 1982-10-22 | 1984-04-26 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | DEVICE FOR SPRAYING A FUEL AND COOLANT MIXTURE ONTO A STEEL SLAM |
| JPS59135852U (en) * | 1983-02-25 | 1984-09-11 | 株式会社神戸製鋼所 | Cooling mist ejection device used in continuous casting equipment |
| US4567934A (en) * | 1983-02-28 | 1986-02-04 | Kabushiki Kaisha Kobe Seiko Sho | Cooling mechanism for use in continuous metal casting |
| JPS59159260A (en) * | 1983-02-28 | 1984-09-08 | Kobe Steel Ltd | Cooling method of mist and ejecting device of mist for cooling in continuous casting installation |
| DE3425092A1 (en) * | 1984-07-07 | 1986-02-06 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | METHOD AND DEVICE FOR COOLING CONTINUOUSLY DELIVERED Pouring Strands in a Continuous Casting Plant |
| US4821948A (en) * | 1988-04-06 | 1989-04-18 | American Telephone And Telegraph Company | Method and apparatus for applying flux to a substrate |
| US4871105A (en) * | 1988-04-06 | 1989-10-03 | American Telephone And Telegraph Company, At&T Bell Laboratories | Method and apparatus for applying flux to a substrate |
| DE4437778A1 (en) * | 1993-10-23 | 1995-08-17 | Wotec Automationssysteme Gmbh | Spray nozzle for a spray unit |
| US6264767B1 (en) | 1995-06-07 | 2001-07-24 | Ipsco Enterprises Inc. | Method of producing martensite-or bainite-rich steel using steckel mill and controlled cooling |
| US6036116A (en) | 1998-04-16 | 2000-03-14 | Coltec Industries Inc | Fluid atomizing fan spray nozzle |
| AU4596899A (en) | 1998-07-10 | 2000-02-01 | Ipsco Inc. | Method and apparatus for producing martensite- or bainite-rich steel using steckel mill and controlled cooling |
| EP1366838B1 (en) * | 2002-02-28 | 2007-11-28 | Lechler GmbH | Cooling device for the rolling frame in a continuous casting machine |
| JP2006315044A (en) * | 2005-05-13 | 2006-11-24 | Nippon Steel Corp | Spray cooling method in continuous casting |
| WO2007003059A1 (en) * | 2005-07-04 | 2007-01-11 | H. U. Jakob Papiertechnik Ag | Device for spraying different media at great speed |
| US20090288798A1 (en) * | 2008-05-23 | 2009-11-26 | Nucor Corporation | Method and apparatus for controlling temperature of thin cast strip |
| KR101882051B1 (en) * | 2013-09-11 | 2018-07-25 | 신닛테츠스미킨 카부시키카이샤 | Injection nozzle |
| US9427788B2 (en) | 2013-11-13 | 2016-08-30 | Primetals Technologies USA LLC | Cooling device for a rolling mill work roll |
| CN111266236B (en) * | 2020-04-01 | 2021-03-12 | 邢台职业技术学院 | Leather spraying device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1087086A (en) * | 1913-05-28 | 1914-02-10 | Edgar K Hand | Nozzle. |
| US1335267A (en) * | 1919-05-02 | 1920-03-30 | Ambrose Jennings Grant | Sprinkler |
| US1665224A (en) * | 1926-04-17 | 1928-04-10 | Clarence G Shields | Spraying apparatus |
| GB717464A (en) * | 1952-10-30 | 1954-10-27 | Spraying Systems Co | Improvements in or relating to spray nozzles |
| GB1159290A (en) * | 1966-12-30 | 1969-07-23 | Parke Davis & Co | Fermentation process for 9-(beta-D-Arabinofuranosyl) Adenine |
| CA936076A (en) * | 1969-12-01 | 1973-10-30 | Kunioka Kazuo | Method and apparatus for cooling steel materials |
| GB1449613A (en) * | 1972-10-19 | 1976-09-15 | Applegate G | Fluid mixing devices |
| GB1447369A (en) * | 1973-02-13 | 1976-08-25 | Johnson & Johnson | Apparatus for producing a fluid-in-liquid dispersion |
| SE409961B (en) * | 1974-03-18 | 1979-09-17 | Voest Ag | STRING MOLDING PLANT FOR THE ROUGH PLATE |
| DE2444613B1 (en) * | 1974-09-16 | 1976-01-29 | Mannesmann Ag | PROCESS FOR SPRAYING COOLANT DURING CONTINUOUS STEEL SLABS, AND DEVICE FOR CARRYING OUT THE PROCESS |
-
1978
- 1978-04-15 DE DE2816441A patent/DE2816441C2/en not_active Expired
-
1979
- 1979-01-30 AT AT0068479A patent/AT376593B/en not_active IP Right Cessation
- 1979-01-31 BE BE193177A patent/BE873830A/en not_active IP Right Cessation
- 1979-02-02 FR FR7902736A patent/FR2432356A1/en active Granted
- 1979-02-05 GB GB7903933A patent/GB2018608B/en not_active Expired
- 1979-02-07 CH CH119079A patent/CH637045A5/en not_active IP Right Cessation
- 1979-03-15 CA CA000323639A patent/CA1141938A/en not_active Expired
- 1979-03-15 IT IT21025/79A patent/IT1112378B/en active
- 1979-04-09 US US06/028,433 patent/US4250951A/en not_active Expired - Lifetime
- 1979-04-13 JP JP4443979A patent/JPS54138824A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB2018608A (en) | 1979-10-24 |
| CH637045A5 (en) | 1983-07-15 |
| DE2816441A1 (en) | 1979-10-18 |
| FR2432356A1 (en) | 1980-02-29 |
| GB2018608B (en) | 1982-09-08 |
| FR2432356B1 (en) | 1983-03-18 |
| DE2816441C2 (en) | 1982-01-14 |
| IT7921025A0 (en) | 1979-03-15 |
| IT1112378B (en) | 1986-01-13 |
| US4250951A (en) | 1981-02-17 |
| BE873830A (en) | 1979-05-16 |
| AT376593B (en) | 1984-12-10 |
| ATA68479A (en) | 1984-05-15 |
| JPS54138824A (en) | 1979-10-27 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |